A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6685-01-211-0165
NSN 4140-01-235-7082
NSN 6650-00-009-9510
NSN 5895-01-393-6848
NSN 6145-01-658-3675
NSN 5975-00-161-7449
NSN 5945-01-094-2221
NSN 6135-01-504-4309
NSN 5905-01-024-7519
NSN 5910-01-347-4403
NSN 6685-01-100-1672
NSN 6320-01-195-5583